Reclamation (noun)

1. The process of converting wastelands, desert, or unused land into land suitable for agriculture or other uses.
2. The process of recovering or restoring something to a usable condition.
3. The process of making land that has been damaged by human activity, such as mining or deforestation, suitable for use again.

Origin:

Late 16th century: from latin reclaimare 'claim back', from re- 'back' + clamare 'to shout, claim'.

Examples:

1. The reclamation of the desert land was a massive project that took several years to complete.
2. The reclamation of the old building involved restoring its original architectural features and turning it into luxury apartments.
3. The reclamation of the mine site involved removing the toxic waste and planting new trees.
4. The reclamation of the wetlands involved removing the dikes and allowing the land to be flooded again.
5. The reclamation of the oil-contaminated soil was a challenging task that required the use of specialized techniques and equipment.